Sooty shearwaters log almost 40, 000 miles migrating from New Zealand to Alaska and back, while ruby-throated hummingbirds can fly 20 hours without stop migrating across the Gulf of Mexico.

乌黑鹱在新西兰与阿拉斯加之间来回迁徙，期间飞行的距离几近40000英里；而红宝石喉蜂鸟在跨越墨西哥湾的途中，能够连续不停地飞行20小时。

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Sooty shearwaters log almost 40, 000 miles migrating from New Zealand to Alaska and back, while ruby-throated hummingbirds can fly 20 hours without stop migrating across the Gulf of Mexico.

乌黑鹱在新西兰与阿拉斯加之间来回迁徙，期间飞行的距离几近40000英里；而红宝石喉蜂鸟在跨越墨西哥湾的途中，能够连续不停地飞行20小时。

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